Disk harrow.



PATBNTED SEPT. 5, 1905.

A. G. LINDGREN.

DISK HARROW.

APPLIOATION FILED we. 21. 1904.

2 SHEETS-SHEET 1.

No. 799,012. PATENTED SEPT. 5, 1905. A. 0. LINDGREN. DISK HARROW.

APPLICATION FILED AUG. 27, 1904.

2 BHEETS$E!IET 2.

mcizw a Calm! co, nomuwocm-wsns wlwwrm UNITED s'ra'rn s PATENT OFFICE.

ALEXUS O. LINDGREN, OF MOLINE, ILLINOIS, ASSIGNOR TO THE MOLINE PLOIVCOMPANY, A CORPORATION OF ILLINOIS.

DISK HARROW.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Appli atio filed August 27, 1904. Serial No. 222,425.

To (all 'nu'lmnt it may concern.-

Be it known that I, ALnxUs O. LINDGREN, of Moline, county of RockIsland, and State of Illinois, have invented a new and usefulImprovement in Disk Harrows, of which the following is a specification.

This invention relates to disk barrows and cultivators of the typeembodying a suitable sustaining frame equipped with gangs of disks; andthe invention consists of various improvements designed to render themachine available as a barrow or cultivator for use in orchards orelswhere for cultivating corn, cotton, and other plants.

The said improvements are especially directed to the manner of mountingthe disk gangs in the frame and the means for effecting their variousadjustments, whereby the gangs may be caused to throw either in or outor set to bed-up the soil when operating over the rows of plants andotherwise adjusted to meet the varying conditions encountered in the useof the machine in the field.

In the accompanying drawings, Figure l is a top plan view of my improvedmachine. Fig. 2 is a side elevation of the same, partly in section. Fig.3 is a plan view, on an enlarged scale, of one of the saddle-plates anddiskyokes, parts being in section to show how the adjustment of thegangs is effected. Fig. a is a vertical transverse section through thesame on the line (I a of the preceding figure. Fig. 5 is a sectionalelevation on the line 7; I; of Fig. 3.

Referring to the drawings, 1 represents a horizontaltransversely-elongated frame consisting of two II-shaped sections ofsteel bar fastened together at their ends by means of bolts 2, thusforming a rectangular structure which is firmly fastened on edge to therear end of a tongue 3 on its upper side by means of bracket-plates tand 5, bolted firmly to the tongue and the frame-bars. Sustained by thisframe are two disk gangs 6 and 7, one on each side of the tongue andeach consisting in the present instance of four disks 8, 9, 10, and I1,journaled on an axle 12, mounted in the lower end of a fl-shaped yoke13, having its upper horizontal portion provided with a vertical conicaltrunnion 14, which is mounted loosely in a correspondingly-formed socket15 in the center of a saddle plate or casting 17, extending between andsecured to the bars of the frame in the manner to be more fullydescribed hereinafter.

In the present instance the trunnion is formed as a separate part fromthe yoke, and it consists of a horizontal body portion 18, recessed onits under side to receive the yoke, from which body portion the trunnionproper rises and extends through the socket 15,which parts are connectedtogether by means of a vertical through bolt 19, passed upward throughthe yoke and trunnion and beyond the upper end of the latter, where ithas applied to it a washer 20 and confining-nut21, the said bolt thusserving to hold the parts together while permitting the yoke and thegangs to rotate around a vertical axis. The purpose of this constructionis to admit of the disk gangs being reversed or turned entirely aroundin order to throw the soil in or out and to admit of the adjustment ofthe gangs to vary the angle of the disks to the line of travel. Thislatter adjustment of the disk gangs is effected by two hand-levers 22and 23, one for each gang, which lovers are pivoted at their lower endssome distance below the tongue on the lower ends of two segment-frames22 and 23, fixed, respectively, to the opposite sides of the tongue, asshown in Figs. 1 and 2, and extendingdownward, so as to bring the leversdown as far as possible in order that there will be no danger ofstripping the foliage when cultivating in orchards. The upper ends ofthese frames are each provided with teeth adapted to be engaged by alatch or dog on the lever in order to lock the lever in position to holdthe disk gang at the proper inclination. Extending rearward from thelever is a connecting-rod 26, having its front end bent laterally toform a finger, which is seated in a socket in a plate 27 on the lever,and its rear end bent downwardly and passed through holes in the innerends of two straps or links29 and 30, which diverge and have theiropposite ends detachabl y connected with arms 31 and 32, respectively,extending outward from the horizontal body portion 18 at the base of thetrunnion 14:.

As a result of the construction described the disk gangs may be adjustedon a vertical axis by the hand-levers to different inclinations withrespect to the line of travel, the operation of the lever through themedium of the connecting-rod 26 and links 29 and 30 causing the trunnion14 to turn in the socket 15 in the saddle-plate and resulting in thecorresponding movement of the disk gangs attached to the trunnion.

The reversal of the disk gangs is effected by first disconnecting theends of the links 29 and 30 from the arms 31 and 32, after which thegang may be turned entirely around in the saddle-plate to its reverseposition, whereupon the links areagain connected with the arms.

I propose in addition to the adjustment described to provide foradjusting the gangs to and from each other and also for setting theinner ends of the gangs higher or lower. I prefer to effect theseadjustments by the construction represented particularly in Figs. 3, 4,and 5, where it will be seen that each sad,-

dle-plate is widened at its ends and provided at its outer side on itsends with trunnions and 40 seated in sockets 41 and 41 in the innersides of two plates 42 and 43 at the outer ends of said plates, whichlatter are connected, respectively, with the front and rear bars of theframe of the machine in the manner presently to be described. At itsinner side the saddle-plate is slotted at its two ends, as at 44 and 44to receive bolts 45 and 46, fixed to the plates 42 and 43, respectively,and extending inwardly therefrom. The slots are curved in the arc of acircle described from the trunnions as centers,so that the saddle-platesmay be rocked on an axis passing through the trunnions and in this waytip the inner end of the disk gang up or down, as described. After beingadjusted to the proper position the plate is held by means of roughenedwashers 47 and 47 applied over the bolt against the roughened face ofthe saddle-plate around the slot and confined by a nut 48, screwed onthe end of the bolt. From this construction it will be observed that thegangs are mounted in the frame so as to rock or turn bodily on ahori-Zontal fore-and-aft, axis with the result that the gangs may be tippedor inclined upward at their inner ends in order to bed-up the soil whenoperating over the row of plants.

The adjustment of the two gangs to and from each other is effected byclamping the two plates 42 and 43 to the frame-bars in such manner thatthey may he slid along the bars and held firmly at the desired point.This is accomplished conveniently by forming on the upper and loweredges of the plates guidinglugs 50 and 51, which bear along the edges ofthe frame-bars, and clamping the plate to the frame-bar by means of avertical clamp-clip 52, applied to the outer side of the frame-bar andconnected with the plate by two horizontal bolts 53 and 54, extending,respectively, above and below the bar through the ends of the clip andthrough perforated lugs 55 and 56, projecting from the plate at theouter side. In order to provide for the connection of the rear end ofthe rod 26 with the ends of arms 31 and 32 through the medium of thelinks 29 and 30, notwithstanding the change in the distance betweenthese points due to the adjustment of the gang transversely along theframe, the connection of the links and arms is made adjustable byforming in the links a number of holes 61, &c., through which and theends of the frames detachable fastening-pins 7 O are passed.

It will be observed that in my improved machine the frame is set downclose to the disks and the operating-levers are pivoted at their lowerends a considerable distance below the tongue or frame, whicharrangement of the parts reduces the height of the machine as a whole toa minimum, thus admirably adapting it for use in orchards where the'foliage of the trees closely overhangs the ground.

Having thus described my invention, what I claim is- 1. In a diskharrow, the combination with a frame, of a disk-yoke mounted thereon andmovable horizontally around a vertical axis, a gang of disks carried byand movable with said yoke, a tongue extending forwardly from the frame,a segment-frame fixed to the tongue and extending downwardly below thesame, a vertical hand-lever pivoted at its lower end to the lowerextremity of the segment-frame, and a horizontal fore-and-aftconnecting-rod joined at its forward end to the hand-lever at a pointthereon above the tongue, and extending rearwardly above the frame ofthe machine and operatively connected with the diskyoke.

2. In a disk harrow the combination of a horizontal fiat frame memberhaving front and rear frame-bars, a tongue connected at its rear endtherewith, a saddle-plate extending between and sustained by the saidframebars, a disk-yoke mounted in said saddleplate to turn on a verticalaxis, a plurality of disks carried by the yoke, a vertical handlever'having a pivotal connection with the tongue at a point considerablybelow the same, a horizontal connecting-rod jointed at its front end tothe lever above the tongue and extending rearwardly above and close tothe front frame-bar, and connections extending transversely fromthe rearend of said rodoutward to the disk gang.

3. In a disk harrow, the combination with the frame, of a disk gangadjustable with relation to the frame transversely of the line of draft,and movable around a vertical axis, a hand-lever mounted on the'frame inadvance of the disk gang, and rearwardly-extending connections betweenthe hand-lever and disk gang for turning the latter on its verticalaxis, said connections being adjustable at the rear end relatively tothe disk gang in the direction of the transverse adjustment of the gang.

4.. In a disk harrow the combination with the frame, of a disk gangadjustable therein transversely of the line of travel, and movablearound a vertical axis, a hand-lever movable longitudinally, aconnecting-rod extending longitudinally rearwardly therefrom, andadjustable connections between the rod and disk gang.

5. In a disk harrow the combination with a frame, of a disk gangadjustable therein transversely of the line of travel and mounted toturn on a vertical axis, a hand-lever for controlling said axialmovement, a rod extend ing rearwardly from the hand-lever, and a linkhaving its inner end jointed to said rod and its outer end connectedadjustably with the disk gang.

6. In a disk harrow the combination with the frame, of a disk-yokemounted therein to turn on a vertical axis and provided with hori zontalarms, said yoke being adjustable bodily transversely of the line oftravel, disks carried by the yoke, a hand-lever for controlling theaxial movement of the yoke, a fore-andaft horizontal connecting-rodjointed at its forward end to the hand-lever, and horizontal linkshaving their inner ends jointed to the rear end of said connecting-rod,and their outer ends adjustably connected with the arms on thetllSlIXOkB.

'7. In a disk harrow the combination with the frame member having frontand rear frame-bars, of a saddle-plate extending longitudinally of themachine between said bars and adjustable vertically around afore-anda'ft axis extending longitudinally of said plate, and providedwith a vertical bearing-socket, a disk-yoke formed with a verticaltrunnion seated in the socket, means for connecting said parts together,and disks carried by the yoke.

8. In a disk harrow the combination with the frame member having frontand rear frame-bars, of opposing plates adjustable along said bars andprovided in their inner adjacent sides with bearing-sockets, alongitudinally-extending saddle-plate formed with studs on its endsseated in the sockets; whereby the saddle-plate is movable around aforeand-aft axis, means for holding the saddleplate in its differentadjustments around said axis, a disk-yoke carried by the saddle-plate,and disks mounted in said yoke.

9. In a disk harrow the combination with the front and rear frame-bars,of a horizontally-arranged saddle-plate sustained by said bars androtatably adjustable at its outer end around a fore-and-aft axisextending longitudinally of the machine, a clamping device at theopposite end of the plate for holding it in its different adjustedpositions, and a disk gang carried by the saddle-plate.

10. In a disk harrow the combination with the front and rear frame-bars,of opposing plates clamped to said bars, bolts extending inward towardeach other from said plates at one end of the same, a saddle-platepivoted at one end to the opposite ends of said plates, and providedwith slots to receive the bolts, clamping-nuts applied to the bolts andadapted to hold the saddle-plate in its adjusted position, a disk-yokemounted on the saddleplate, and disks mounted in the yoke.

In testimony whereof I hereunto set my hand, this 16th day of August,1904, in the presence of two attesting witnesses.

ALEXUS G. LINDGREN.

\Vitnesses:

C. H. LIPPINCOTT, L. G. BLANDING.

